The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 04, 2018
Filed:
Nov. 29, 2017
Murata Manufacturing Co., Ltd., Kyoto, JP;
Susumu Takeuchi, Kyoto, JP;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
A suction device includes a valve, a piezoelectric pump, and a housing. The valve includes a valve casing and a diaphragm. A first ventilation hole, a second ventilation hole, and a third ventilation hole are formed in the valve casing. The diaphragm is fixed to the valve casing and forms a flow path in the valve casing. The second ventilation hole is opened under atmospheric pressure. The piezoelectric pump has a suction hole and a discharge hole. The discharge hole is in communication with the first ventilation hole. The housing has a cavity. A suction pad is attached to the cavity. The housing forms an enclosed space together with the valve and the piezoelectric pump. The enclosed space is a space that is in communication with the cavity, the suction hole, and the third ventilation hole.